“…To wit, existing conceptualizations of technology use are, essentially, bound to static technologies being used in collocated activities by fairly static users. However, the functional essence in terms of portable technology use in mobile activities by mobile users will present different and unique challenges (see Lyytinen & Yoo, 2002;Sarker & Wells, 2003;Søren-sen & Pica, 2005;Weilenmann, 2001;Wiberg & Ljungberg, 2001;Wiredu & Sørensen, 2006). Thus, while task-and location-related conditions are fairly constant for computing in collocated activities, these conditions are highly variable for mobile computing in mobile activities.…”